Chinese Physics B, Volume. 29, Issue 10, (2020)
Ordered product expansions of operators (AB)±m with arbitrary positive integer
We arrange quantum mechanical operators (a?a)m in their normally ordered product forms by using Touchard polynomials. Moreover, we derive the anti-normally ordered forms of (a?a)± m by using special functions as well as Stirling-like numbers together with the general mutual transformation rule between normal and anti-normal orderings of operators. Further, the ?- and ?-ordered forms of (QP)±m are also obtained by using an analogy method.
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Shi-Min Xu, Yu-Shan Li, Xing-Lei Xu, Lei Wang, Ji-Suo Wang. Ordered product expansions of operators (AB)±m with arbitrary positive integer[J]. Chinese Physics B, 2020, 29(10):
Received: Mar. 15, 2020
Accepted: --
Published Online: Apr. 21, 2021
The Author Email: Xu Xing-Lei (wanglei1692@163.com)